Bituminous emulsion and process of making same



Rea-ma Nov. 1 1; 1924.,

umran- 's'TA-ras PATENT OFFICE.

Lesa-Ea mscmamun, or cnrcaoo, rumors.

BITUMINOUS-EMULSION PROOF-S80! ll'o Drawing. Original No. 1,450,686, dated April}, 1828, Serial No. 582,316, filed Application for reluue filed November 15, 1923. Serial llo. 876,018

To all whom, it may concern:

Be it-known that I, Las'mn KmsoHBRaUN,

a citizen of theUnited States,-residing in the city of Chicago, county of Cook, and

of. Illinois, have invented certain new and useful Im rovements in Bituminous Emulsions and Erocesses of Making Same, of which the following is a specification.

The invention relates to improvements in ituminous emulsions and process of making same, and refers; more particularl to that type of-emulsion which is miscib e in water.

This invention may he carried out as folows:

I take sulphite liquor, centrated, whlch as is well known, is a rela'; tively thick syrupy mass. This sulphite liquor 'is then heated. To this heated preferably 0on sulphite liquor, I add bituminous material in liquid condition, as for example, asphalt of a melting point of 150 F., heated so that it is in fluid condition. The sulphite liquor will be heated to about the temperature at which the asphalt melts. While the asphalt is being slowly added, the sulphite liquor is being constantly agitated so as to produce an emulsion in which the asphalt is in the dispersed phase. Water may be added from time to time to maintain the proper consistency of the emulsion.

Instead of using asphalt of 150 degrees F. melting point, petroleum residuum maybe used, which is a thick li id at normal temperatures or a particu arly highmelting point asphalt may be used or an asphalt having a higher melting point than 150 degrees F. but below the boiling pointof water, may be used. If a high melting point asphalt is desired to be. emulsified, the sulphite liquor may be maintained under a substantial pressure, so as to prevent the water from evaporatin while the asphalt is being emulsified. 5 e invention may be carried out inthe manner above descnbed, excelpt that there may be mixed with the su phite liquor,

bentonite, or highly colloidal clay so that agents they both act as emulsi maxme sum.

Aug-nut 16, 1922.

One use to which this product may .be put, is that of a dust layer and also as a road binder. Man other uses will occur to those skilled in tile art. When this material is used for road purposes, it is ClBSliable that the asphalt or other bitumen be of relatively low melting point so as to protect the sulphite liquor, as far as ossible, from the action of rain, and assist in bindmg the particles of road material together.

en this emulsion is made, using harder in such instances, to 're-emulsify or remix such dry products with water. a

e oregoing as a cement one upon the other. Another advantage of using this material for paper broke or waste can be back into emulsion form.

I I claim as my invention:

1. An emulsion consisting of sulphite liquor and bitumen, the bitumen being in dispersed phase. v

2. An emulsion consisting of sulphite liquor, an earthy. colloidal material and bifumen, said bitumen'being in the dispersed p ase. 3: An emulsion, non-coalescible on drymg, consisting of sulphite liquor, an earthy colloidal material, and a bitumen being in dispersed phase. r

4. -An emulsion, non-coalescible on drying, consisting of sulphite liquor, and a bitumen being in dispersed phase.

5. A bituminized sulphite liquor in emulsion form, capable of acting as a road binder.

6. A bituminized sulphite liquor in emulsion form.

as for example, 160-18O degrees F- products is that the 

